20203061 has 4 divisors (see below), whose sum is σ = 21266400. Its totient is φ = 19139724.

The previous prime is 20203049. The next prime is 20203069. The reversal of 20203061 is 16030202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16030202 = 2 ⋅8015101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531641 + ... + 531678.

It is an arithmetic number, because the mean of its divisors is an integer number (5316600).

Almost surely, 2^20203061 is an apocalyptic number.

It is an amenable number.

20203061 is a deficient number, since it is larger than the sum of its proper divisors (1063339).

20203061 is a wasteful number, since it uses less digits than its factorization.

20203061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063338.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20203061 is about 4494.7815297298. The cubic root of 20203061 is about 272.3573239582.

Adding to 20203061 its reverse (16030202), we get a palindrome (36233263).

The spelling of 20203061 in words is "twenty million, two hundred three thousand, sixty-one".